Zion's Glad Songs (1908). Hymn book published by M.L. McPhail. At this time, McPhail was a travelling representative ("Pilgrim") of the Watch Tower Bible and Tract Society (now known as Jehovah's Witnesses), working under the direction of Charles Taze Russell. McPhail had printed several editions of this hymn book. The first edition was published in 1896 in the February 1, 1896 Zion's Watch Tower. Other editions are 1900, 1902, 1905.